Dogless attachment for ribbers



W. LARKIN.

DOGLESS ATTACHMENT FOR RIBBEHS.

APPLICATION FILED APR. 9, I920.

Patented 0015.. M, 1922..

2 SHEETSSHEET I.

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W; LARKIN.

DOGLESS ATTACHMENT FOR RIBBERS.

APPLICATION FILED APR. 9, 1920.

Patented (Tet M, 1922..

2 SHEETSSHEET 2.

All

All

WALTER LAEKIN, E NOEJRISTQVVN, PENNSYLVANIA, ASSIG-NOE TU FIDELITY MACHINE AND MANUFACTURING 00., OF IEILAJDELENIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

ATTACAIENT EON NIEEEE.

a iieaniii anti a n a,

To all whom it may concern:

Be it known that ll, WALTER LARKIN, a citizen of the United States, residing in Norristown, Pennsylvania. have invented Dogless Attachments for Ribbers, of which the following is a specification.

This invention relates to that class ot mechanism designed to prevent the relative rotation of the dial and cylinder of a circular knitting machine while supportin the dial in its required position andpermitting the delivery of yarn to the needles.

One object of the invention is to provide a novel device of the above class which shall not require movable dogs or pawls with a ratchet wheel, and a cam for actuating said pawls; the invention contemplating novel means for preventing rotation of the dial post while permitting rotation of the yarn coaxially therewith.

I further desire to provide an attachment for a knitting machine of the class described in which the dial and its post shall be-supported by the yoke which cooperates with said post, and a spider to revent rotation of the post and its dial, whi e permitting rotation of the yarn about the post; the construction being such as topermit the cyllnder and dial being rotated on their vertical axis to enable an operator to inspect or opera-tel uponthe rear parts of these elements or their associated structures.

I also desire to provide a knitting machine with a dogless attachment including a novel combination of parts whereby the dial post with the dial and its associated cams may be quickly and conveniently removed from or inserted in the machine the invention including also conveniently operative means whereby the post may be.

adjusted vertically to vary the relative po sition of the dial and cylinder.

Another ob'ect of my invention is to provide a dogless attachment for knitting machines, which by avoiding the use of pawl and ratchet mechanism or equivalent devices, shall be more reliable in operation, inexpensive and simple in construction and of such nature as to require but a minimum of attention under conditions of use.

These objects and other advantageous ends I attain as hereinafter set forth, reference bein had to the accompanying drawings, in which I ports and is fixed by man. Aerial in. train.

plan of the upper part of the All Fig. 4 is anfelevation partly in vertical section further illustrating shown in Fig. 3.

In Figs. 1 and'2 of the above drawings, 1 represents the upper part or the frame of a knitting machine on which is mounted an adapter ring 2 carrying the stationary needle cylinder 3. Between said ring and the surrounding part of the frame is mounted a structure bevelled rack or gear I which is fixed to the rotating cam ring 5, and is driven by any suitable mechanism. These parts are held n position by a retaining ring 6 carrying in the present instance three posts 7 serving to support a spider 8. These posts are mounted on a portion of the ring somewhat less than 180 dog. in angular extent and the spider itself consists of a segmental structure 9 of less than 180 deg. angular length, with which the spider arms are integral. This portion 9 of the spider is internally concentric with the needle cylinder 3.

The customary cams for the control of the needles on the cylinder 3 are carried by the rotating cam ring and by the cam ring cap 10 which is mounted thereon, and said cam ring also serves as a support for a pair of oppositely disposed posts 11 carrying the yoke 12 whose central portion or hub suppins or screws to the flange 13 of a yo e bushing 14:. Passing centrally through the bushing 14:, which extends both above and belw ts'flange 13, is

the dial post 16 having fixed to its lower end the dial 17 and also'having rotatably mount- 18. The latter is proed on it a dial ca vided with a latera 1y projecting arm 19 engaged by a pin or post 20 extending downwardly from the yoke 12 so that it is rotated therewith.

I The yoke bushing and therefore the post 16' extendin therethrough, is laterally held andsteadie' by a centering rin 21 formed with a flange resting upon an fixed by screws to the fiat to surface of the spider ront 9 from whic it extends removably All . downwardly to provide a bearing for the edge of said flange. As above noted, the

spider segment 9 is circularly curved concen-V tric with the needle cylinder, and while the centering ring 21 provides a circular bearing for'the flange 13 of the bushing 14 which is also concentric with the needle cylinder and dial post; the upper part of said ring is formed with a circular opening whlch 1s eccentric both to the spider segment and to the needle 0 linder. In this openlng is rotatably mounte an externally flanged yarn carrier ring 22 concentrically bored to'rotatably receive an eccentric 23 on the di'al post 16 which passes eccentrically throu'gh'it. Said eccentrlc is recessed to recelve or fit over the,

' upper end of the-bushing 14 and the welght the dial post withthe dial etc. is transferred to said eccentric through an adjusting ca 25 pinned to said post, there being an adiusting screw 26 extending vertically through said cap so as to bear on the eccentric.. Said cap is preferably flanged so as to I fit down over the upwardly pro ecting por tion of the eccentric 23 in order to keep the dial post from turning. The yarn carrier firing 22 has a downwardly flaring passage 27 for the yarn while a similar upwardly flaring passage 27 a is formed through the flange 13 of the bushing 14, and in order that the yoke 12 and the bushing, I connect it to the flange 13 of the latter by a link 28 one end of which receives the pin 20 while the other is connected by a pin 29 to said ring.

With the above described arrangement of parts, power is applied to the gear 4 to turn the cam ring 5 in the well known manner, and the posts 11 with the yoke 12 and bushing 14 being mounted on said cam ring, are necessarily turned therewith. The bushing 14 through the link 28, consequently causes the yarn carrier ring 22 to rotate in the centering ring 21, so that the yarn is free to pass through the channels 27 and 27 to the needles of the machine. Since the eccentric 23 is rigidly fixed to the dial post 16 through I serting a piece of material under the cap 25 and the pin 25, and since said post is axially and yoke 12, it is held from rotation axially by the eccentric 23, which necessarily remains stationary within the rotating yarn carrier ring 22. The dial plostand the dial are hung from the cap '25 w ich is supported fromthe yoke as above described, and the dial may be adjusted vertically relatively to the cylinder by suitable manipulation of the screw 26.

If for any reason it should be desiredto temporarily increase the space between the dial and cylinder needles, said 0st with the dial may be raised by lifting t em with the cap 25 and eccentric 23 and if desired, in-

said eccen trio. When desired, removal of this piece "moved from the machine.

will permit the dial post with the dial to be lowered to its original position relatively to the needle cylinder. 7 a

When the dial post with its associated parts is to be-removed this may be accomplishedvwith the utmost convenience by removing the screws 30 whereby the centering ring 21 is held to the spider 8 and thereafter taking oil the nuts-31 which hold theyoke 12 to the posts 11. -,Thereupon its associated parts etc. may be raised to free its arms from sai posts, and by. inclining the dial post awayfrom the spider 9, it with the various disks, bushings etc. may be re fiy extending the centering ring downwardly to provide a bearing for the outwardly extending flange 13 of the bushing 14, the post 16 is materially steadied, and is held .by this means from possible gyrat'ory movement under operating conditions. v

If it be desired to simplify the construc- .tion of the machine, I may form the center-' ing ring as shown at 21 in Figs. 3 and 4, and omit the downwardly extending bearing for the flange of the bushing 14 which would thus have no side bearing or support. As in the other form of my dial adjusting cap 25 trio 23, which through ried upon the yoke 12.

From the above description it will be noted that my machine altogether avoids the necessityfor such devices as cams and paw and-ratchet mechanism for holding the dial post and dial from rotation while providing them with the necessary support, and permitting passage'of the thread to be knitted. Obviously the construction is Simple, substantial and of such a nature that even though the'parts become worn, them is no danger of t eir failure to operate such as would occur when the pawls ordinarily empltiyed do not function properly.

11 order to permit the operator of the machine to makeany inspection or repair of the rear side of-the needle cylinder or dial,

rests upon the eccenthe bushing 14 is carprovide the adapter ring 2 with a flange 51 rotatably fitting inside of the circular o ening of the main frame 1, connecting t ese parts byscrews such as indicated at 52. With this arrangement it is possible, by removing said screws and the screws connecting the dial centering ring with the spider, to turn the cylinder, dial post and their associated parts on the vertical .axis of the cylinder through any angle, usually 180 deg. so that the rear parts of these elements are brought to the front of the machine, and may be readily adjusted, cleaned,

or examined.

It is noted that while in- Fi 1 I have the yoke with.

etc. while standing in front of the machine, centered by'the bushing 14 I invention however, the

shown the yarn guides 27 and 2 as in the l verticalplane including the yoke 12, and its iaaaaea concentric-With the yarn guidin' member.

2. The combination in a rib nitting machine of a cylinder; a dial; rotary cam mechanism for the cylinder and dial; means for, supporting the dial; a relatively fixed.

structure; and elements including a'stationary eccentric cooperatin with said structure for preventing rotation of the dial. I

3. The combination in a rib knitting machine of a cylinder; a dial; a ring mounted eccentrically to the axial line of the dial and having a yarn guide; means for turning said ring; with a structure connected to the dial and held from rotating by said ring.

4. The combination in a rib knitting machine of a non-rotating needle cylinder; a dial; cam rings; means for rotating said rings; a locking deviceinctn' an eccentric for preventing rotation of the dial with a rotary yarn guiding member holding said eccentr1c from turning and journaled in a relatively stationary part of the machine.

5. The combination in a rib knitting machine. of a frame; a cylinder; a dial; means including a relatively rotary structure for supporting the dial; rotary cam mechanism for the cylinder and dial; a rotary member supported by the frame for guiding the yarn to the needles; with an eccentric maintained in a fixed position by said member and holding the dial from rotating.

6. The combination in a rib knitting machine of a cylinder; a dial; a dial post; rotary cam mechanism for the cylinder and dial; arotary yarn guide; a stationary structure engaging the yarn guide; and a member continuously held immovable by the stationary structure acting through the yarn guide for preventing rotation of the dial post and dial.

7. The combination in a rib knitting machine of a cylinder; a dial post; a relatively stationary structure; a yarn guide mounted thereon and rotatable eccentrically to the post; an eccentric on the post held from rotating by said yarn guide; a rotary cam ring; and a structure mounted thereon for supporting the'dial post and dial.

8. The combination in a. rib knitting machine of a cylinder; a dial post; a relatively stationary structure; a yarn guide mounted thereon and rotatable eccentrically to the post; an eccentric on the post held from roof the dial post and dial.

.tating by said yarn guide; a rotary cam ring; and a structure mounted thereon for supporting the dial post and dial; with means for vertically adjustin the dial ost.

9. The combination in a r1 knitting machine of. a cylinder; a dial; adial post; a

rotary structure providin a vertical bearing for said dial post w also supporting the same in a predetermined vertical position; a relativel fixed structure extending adj acentthe dial post; a yarn uiding member having a bearing on said xed' structure and driven by said rotary structure;jwith a relatively fixed elementengaging said rotary member and normally preventing rotation 10. The combination in a rib knitting machine of a frame; a cylinder; a dial;a cam mechanism for the cylinder and dial; a rotary yoke supportin the dial; a yarn guiding member rta le with the yoke and having a bearing in a part of the frame;

with aneccentric engagin the yarn uid-' ing member and holding't e dial post rom turnin. T

11. he combination in a rib knitting machine of a frame; a cylinder; a dial; a dial post supporting the dial; cam mechanism for the cylinder and dial; a rotary yoke; a flanged bushing fixed to the yoke and rotatably engaging the dial post; a member connected to the frame and'providing a bearing for the flange of said bushing; a rotary yarn guide driven from the yoke and having a bearing in said member eccentric to the dial post; and an eccentric fixed to the dial post held from turning by said yarn ide.

12. The combination in a rib nitting machine'of a frame; a cylinder; adial; cam mechanism for the cylinder and dial; a dial post; a rotary structure vertically and laterally sup orting the dial post; and means for ho ding the post from turning consisting of an eccentric, a rotary member held from bodily movement by the frame and engaging the eccentric, with a member fixed to the dial post separably engaging the eccentric to prevent rotation of the post relatively thereto.

13. The combination in a rib knitting ma chine of a frame; a cylinder; a dial; cam

mechanism for the cylinder and dial; a dial post; a rotary structure vertically and laterall supporting the dial post; means for holdmg the post from turning consisting of an eccentric, a rotary member engaging the eccentric and held from bodily movement by the frame; and a member fixedto the dial post separably engaging the eccentric to prevent rotation-of the postrelatively thereto; with means for adjusting the post relatively to the eccentric.

14. The combination in a rib knitting machine of a frame; a cylinder; a dial; cam mechanism for the cylinder and dial; a dial post; a rotary structure vertically and late erally supporting the dial post; means for holding the post from turning consisting of an eccentric, a rotary member engaging the eccentric and held from bodily movement by the frame; a member fixed to the dial post separablyengaging the eccentric to prevent rotation of the post relatively thereto; with means for adjusting the post relatively to the eccentric, consisting of, an element threaded into said member and engaging the eccentric. 15. The'combination in a rib knitting machine of a frame; a cylinder; a dial; cam mechanism for the cylinder and dial; a dial post; a structure carried by the frame and including a segmental structure above the cylinder; a centering rin removably mounted on said structure an having a bearing eccentric to the dial post; a yarn guiding ring rotatable in said bearing; means for driving said ring; with an eccentric in the ring connected to the dial post for holding the latter .from turning. j

16. The combination in a rib knitting machine of a frame; a cylinder; a dial; a dial post; cam mechanism for the cylinder and dial; a rotary structure vertically and lat-' erally supporting the dial post and dial and including a removable yoke supporting said post; acentering ring; "means for separably carrying said centering ring from the frame to ermit of itsremoval horizontally-there rom;,a yarn guide having a bearing in said centering ring; with an eccentric connected to the dial post and held from rotation therewith by the yarn guide. 17 The combination in a rib knitting machine of a frame; a cylinder; a dial; a dial post; rotary cam mechanism, for the cylinder and dial; postsrotatable with said cam by said structure and .said

mechanism; a/ yoke removably mounted on the posts; a bushing for the dial post supported on said yoke; an eccentric fixed'to the dial post and having .a bearing on said bushing; a'yarn guide rotatable relatively to the eccentric; a segmental structure mounted on the frame adjacent said yarn guide; a centering ring removably carried providing a bearing for-the yarn guide; with means for, rotating ring.

18. The combination in a rib knitting ma chine of a cylinder; a. dial; a rotar yarn guiding membermeans for 'holdin t 1e dial from turning relatively to the cy lnder inc'luding a structure eccentric to the dial and concentric. with the yarn guiding member; with a guide for said eccentric structure permitting vertical movement thereof when it is desired to raise the same to increase the space between the dial and cylinder.

19. The combination in arib knitting machine of a cylinder; a dial; a dial post; a rotary yarn guide; a relatively fixed supporting structure; an eccentric fixed to the post and cooperating with the yarn guide to hold said post fromturning, said eccentric and post being movable vertically relatively to the fixed supporting structure.

20. The combination in a rib knitting machine of a needle'cylinder; a dial; a rotary yarn guide; a post supporting the dial eccentrically to the path of movement of said guide; an eccentric fixed to the dial post for holding the same from turning; a cap fixed to the dial post above the eccentric; with a structurevertically supporting the eccentric with the dial post and dial, the latter parts being free to be moved vertically relative to the needle 0 linder.

. ALTER LARKIN. 

